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Arlecino [84]
3 years ago
5

The volume of a gas is 450 mL when its pressure is 1.00 atm. If the temperature of the gas does not change, what is the pressure

when its volume is changed to 2.00 L?
Use .
0.225 atm
0.444 atm
2.25 atm
4.44 atm
Chemistry
2 answers:
Mekhanik [1.2K]3 years ago
8 0

Answer: The pressure of the gas is 0.225 atm.

Explanation: To calculate the pressure of the gas, we use Boyle's Law.

Boyle's Law states that pressure is inversely proportional to the volume of the gas at constant temperature.

Mathematically,

P\propto \frac{1}{V}

Or,

P_1V_1=P_2V_2

where,

P_1\text{ and }V_1 are the initial pressure nd volume.

P_2\text{ and }V_2 are the final pressure andvolume

Initial conditions:

P_1=1atm\\V_1=450mL

Final conditions:

P_2=?atm\\V_2=2L=2000mL

Conversion factor: 1L = 1000mL

Putting values in above equation, we get:

1atm\times 450mL=P_2\times 2000mL\\P_2=0.225atm

Inessa [10]3 years ago
4 0

At a constant temperature and number of moles of the gas the product of PV is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

P1V1 =P2V2

P2 = P1 x V1 / V2

P2 = 1 x .450 / 2

<span>P2 =.225 atm</span>

<span>
</span>

<span>Hope this answers the question. Have a nice day.</span>

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4 0
3 years ago
At high pressures and moderate temperatures nitric oxide gas disproportionates rapidly according to the reaction 3NO(g) ⇌ N2O(g)
Pie

Answer:

3.8 x 10⁵

Explanation:

For the equilibrium :  3NO(g) ⇌ N2O(g) + NO2(g), the equilibrium constant in the terms of the concentrations of the gases in mol/L is

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3 0
3 years ago
Read 2 more answers
Calculate the enthalpy for the following reaction. During the reaction, the temperature changes from 42.5 C to 37 C. The specifi
Dahasolnce [82]

Answer:

q = 0.810 Kj/mol

Its an endothermic reaction

Explanation:

Enthalpy can be evaluated by using following formula -

q = m * c* \delta T

where

q is the enthalpy or change in internal energy

m is the mass in kg

c is the specific heat

and \delta T is the change in temperature

Mass of HCl is equal to 36.46 g/mol

or

Mass of HCl is equal to 0.03646  Kg/mol

Substituting the given values in above equation, we get-

q = 0.03646 * 4.04 * (42.5 - 37)\\q = 0.03646 * 4.04 * 5.5 \\

q = 0.810 Kj/mol

Enthalpy is positive thus it is an endothermic reaction

4 0
3 years ago
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